xlii 
Meteorological Observations. 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta , 
in the month of September, 1861. 
Daily Means, &c. of the Observations and of the Hygrometricalelements 
dependent thereon.— (Continued.) 
Date. 
Mean Wet Bulb Ther¬ 
mometer. 
Dry Bulb above Wet. 
Computed Dew Point. 
Dry Bulb above Dew 
Point. 
Mean Elastic force of 
Vapour. 
Mean Weight of Vapour 
in a Cubic foot of air. 
Additional Weight of Va¬ 
pour required for com¬ 
plete saturation. 
Mean degree of Humi¬ 
dity, complete satura¬ 
tion being unity. 
o 
0 
o 
0 
Inches. 
T. gr. 
T. gr. 
1 
Sunday. 
2 
81.0 
3.6 
79.2 
5.4 
0.976 
10.45 
1.94 
0.84 
3 
82.5 
3.4 
80.8 
5.1 
1.027 
.96 
.91 
.85 
4 
79.9 
2.7 
78.5 
4.1 
0.955 
.27 
.41 
.88 
5 
77.9 
2.3 
76.7 
3.5 
.902 
9.72 
.16 
.89 
6 
79.8 
3.6 
78.0 
5.4 
.940 
10.09 
.87 
.84 
7 
80.5 
3.0 
79.0 
4.5 
.970 
.40 
.60 
.87 
8 
Sunday. 
9 
80.8 
3.9 
78.8 
5.9 
.964 
.31 
2.11 
.83 
10 
81.0 
3.7 
79.1 
5.6 
.973 
.40 
.02 
.84 
11 
81.1 
4.0 
79.1 
6.0 
.973 
.40 
.17 
.83 
12 
80.4 
3.3 
78.7 
5.0 
.961 
.31 
1.76 
.85 
13 
80.9 
3.5 
79.1 
5.3 
.973 
.42 
.89 
.85 
14 
80.5 
3.5 
78.7 
5.3 
.961 
.31 
.86 
.85 
15 
Sunday. 
16 
80.0 
3.7 
78.1 
5.6 
.943 
.10 
.97 
.84 
17 
79.8 
4.7 
77.4 
7.1 
.922 
9.87 
2.48 
.80 
18 
79.9 
3.3 
78.2 
5.0 
.946 
10.15 
1.74 
.85 
19 
79.8 
3.0 
78.3 
4.5 
.949 
.18 
.57 
.87 
20 
79.0 
1 9 
78.0 
2.9 
.940 
.13 
0.97 
.91 
21 
79.3 
2.6 
78.0 
3.9 
.940 
.11 
1.33 
.88 
22 
Sunday. 
23 
80.2 
3.4 
78.5 
5.1 
.955 
.25 
.78 
.85 
24 
81.0 
4.3 
78.8 
6.5 
.964 
.29 
2.35 
.81 
25 
80.4 
4.3 
78.2 
6.5 
.946 
.11 
.31 
.81 
26 
79.6 
4.7 
77.2 
7.1 
.916 
9.81 
.47 
.80 
27 
80.1 
5.4 
77.4 
8.1 
.922 
.85 
.87 
.77 
28 
79.0 
3.3 
77.3 
5.0 
.919 
.88 
1.70 
.85 
29 
Sunday. 
30 
79.3 
2.8 
77.9 
4.2 
.937 
10.08 
.43 
.88 
All the Hygrometrical elements are computed by the Greenwich Constants. 
